Adjustable crank-hanger for polycycles.



C. S. RUFF. ADJUSTABLE CRANK HANGER FOB. POLYCYGLES.

APPLICATION TILE!) SEPT. 26, 1913.

Patented Apr. 21, 191 i 2 SHEETS-SHEET 1.

3 n uzntoz c. s. RUFF. ADJUSTABLE CRANK HANGER FOB. POLYGYCLES.

APPLICATION FILED SEPT. 26, 1913 Patented Apr. 21, 1914.

2 a M? H m f z a. W/ W. a.

DIE I amuentot tains to make and use the same.

' under surface of the body adjacent its forv onsxs'rran s. RUFF, orRIVERSIDE, new .rnasnir.

'ADJUSTABIE CRANK-HANGER FOR POLYCYCLES.

Specification of Letters latcnt.

Patented Apr; 21, 1914.

-Applicat1onfiled September 28, 1913. Serial No. 792,067.

c To all whom it may concern Be it known that I, Cams-nan S. Kerr, acitizen of the United States, residing at Riverside in the county ofBurlington and State of and useful Adjustable Crank-Hanger forPolycycles; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it apper- This invention relates to a newand useful adjustable crank-hanger for polycycles.

One of the features of the invention is the provision of a bracket suport for detachably holdin the pedal cran shaft, whereby the crank sfiaftmay be removed, for the insertion of another crank shaft having a largerdiameter of sprocket wheel, whereby the speed of the vehicle may beincreased.

In order to insert a a sprocket wheel of or diameter having a largerratio in or to increase the speed of the vehicle, the bracket supportshave to he adjustable relative to the ody of the vehicle, which isanother feature of the invention, each bracket support comprising twoivotal sec tions, so that each bracket may e adjusted so that the pedalswill not strike or come too close to the ground when operati the same.

In practical fields the details 0 construc tion may necessitatealterations, to which the patentee is entitled, provided the alterationsfall within the scope of what is claimedr The invention comprisesfurther features and combination of parts, as hereinafter-set forth,shown in the drawings and claimed.

In the drawings: Figure 1 is a view in side elevation showing parts insection, illustrating one side of sprocket wheel on the pedal crank.Fig. 2 is substantiall a similar view showing a larger sprocket w eelfor increasing the speed of the vehicle, which sprocket wheelnecessitates the bracket supports being difierently adjusted than thatshown in Fig. 1 so as to revent the edals from striking the groun Fig. 3is a ottom plan view -of the adjustable crank-hanger for polycycles.Fig. & is an enlarged detail view of the bracket supports.

Referring more particularly to the drawings, 1 designates the rearwheels, which are mounted on the axle 2 having a sprocket 3, which axle2 is mounted 'in suitable bearings 4 of the body 5 of'the vehicle.Uponthe New Jersey, have invented a new pedals 21. By movin ward end arebrackets 6, in bearings of which the forward axle 7 is mounted, to theends of which axle the stub axles 8 are connected at 9 in theusnalmanner. Said stub axles are provided with the usual arms 10 which areconnected tothe usual form oi steering mechanism 12, including thesteeri wheel 13 and shaft 14.

, on the under surface of the body 5 are brac ct supports 15 eachsupport comprises two sections 16 and 17 pivoted together at 18Thepivoted ends of said sections are provided with hooks 19, which-aredisposed adjacent one another and constitute a hearing for the pedalcrank shaft 20' having the 17 in the direction 0 the arrows 22, that is,when the bracket supports are detached from the body, the pedal crankshaft may the sections 16 and.

be removed from its bearings, so that another crank shaft provided witha. sprocket having a different ratio than that shown in.

Fig, 1 maybe inserted. The sprocket on the pedal crank shaft isdesignated by the character 23, and over which and over the w sprocket 3a chain 24 travels. The oppo- SliG'GllClS of the sections 16 and 17terminate in laterally extending reduced parts or portions 25, mountedin bearings 26, which are secured adjustably to the under surface of thebody 5, b means of the bolts 27 and 28, which exten through the slots 29and 3Q. When arranging a sprocket 23 of diiferent ratio, the bearings 26at the rear may be adusted rcarwardly, while the forward bearlugs may beadjusted forwardly, so that the ad acentpivoted ends of the sections 16and 17 may be brought or arranged closer to the body 5, so that thepedals will not strike or come in contact with the ground.

'The invention having been set forth, what is claimed asnew and usefulis:-

1. In an adjustable crank-hanger for polycycles, a rear driven shafthaving a s rocket and provided "with wheels, albody, racket supportsadjustabl connected to the body, each of said brac et supports comrising two sections pivoted to ther' and aving adjacent hooks at theirpivoted ends, a pedal crank shaft detachably mounted in said adjacenthooks and provided with a sprocket wheel, and a sprocket chain passingabout said sprockets.

2. In an adjustable crank-hanger for polycycles, a rear driven shafthaving a s rocket and provided with wheels, a body, racket supports,each comprising two sections, forward and rear bearings adjustablysecured to the body in which the opposite ends of the sections of thebracket supports are mounted,

5 the adjacent ends of the sections of each bracket support beingpivoted together and having adjacent books at their pivoted ends forminga bearing, a pedal crank shaft detachably mounted in the hook'bearingsof 10 saidsections and provided with a sprocket wheel, and a sprocketchain passing about said sprockets.

In testimony whereof I have signed my name to this specification inthepresence of two subscribing witnesses.

CHRISTIAN S. RUFF.

Witnesses:

Invm G. LAMB, CHAS. H. Zmonsn.

